Abstract
As a new magnetoresponsive magnetorheological (MR) material under an applied magnetic field, magnetic Fe nanoparticles were synthesized from a simple process of thermal decomposition of pentacarbonyl iron using oleyl amine and kerosene at 150 °C. Morphology of the fabricated Fe nanoparticle was examined using both scanning electron microscopy and transmission electron microscopy. MR characteristics of the nano-sized magnetic particle-based MR fluid dispersed in non-magnetic carrier fluid was investigated using a rotational rheometer under different external magnetic field strengths, focusing on their flow behaviors at a steady shear mode and yield stress. Flow curve was also found to be fitted well with the Casson equation.
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This work was supported by SK Energy, Korea.
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Kim, I.G., Song, K.H., Park, B.O. et al. Nano-sized Fe soft-magnetic particle and its magnetorheology. Colloid Polym Sci 289, 79–83 (2011). https://doi.org/10.1007/s00396-010-2322-7
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DOI: https://doi.org/10.1007/s00396-010-2322-7